Pump construction



June 13, 1933. Q JEVSTER 7 1,914,021

PUMP CONS TRUCT I ON Filed Jan. v30, 1930 Zhmzei 6, Jedi;

Patented June 13, 1933 PATENT FFICE DANIEL C. TESTER, OF ELDORENDO, GEORGIA PUMP CONSTRUCTION Application filed January 30, 1930. Serial No. 424,645.

This invention relates to a pump construction and primarily aims to provide a means for initial installation or as an attachment, to enable a pump to exert a suction or evacuating action as Well as a filling action.

7 One embodiment of the invention is in connection with a gasoline pump as used at a filling station. In such. instance the invention provides a means whereby gasoline may be sucked or evacuated from the gasoline tank of an automobile back into the visible bowl or container of the pump.

Another object is to provide a construction wherein the above object is accomplished by providing a three way valve connection between the pump, suction pipe and gasoline supply tank and a pipe communicating with the discharge pipe of the bowl.

The more specific objects and advantages will become apparent from a consideration of the description following taken in connection with accompanying drawing illustrating an operative embodiment.

In said drawing Figure 1 is a view showing the improved pump in elevation, several parts being broken away to disclose details, and

Figure 2 is a view particularly showing the three way valve in connection with the pump, in a different position of adjustment from that disclosed in Figure 1.,

Referring specifically to the drawing 10 generally designates a pump such as is used at a gasoline filling station for the purpose of supplying gasoline from underground or other tank to the filling tank of an automobile. The pump has a conventional visible bowl as at 11 and is supported by conventional means such as a hollow standard 12 from the ground adjacent which a pump 13 of conventional construction is disposed, which is operated through reciprocation of a lever 14. A pipe 15 extends into the supply reservoir or tank usually disposed in the ground and communicates with a three way valve casing 16, which has a short pipe 17 connected with the pump 13. A manually operable rotary plug valve 18 is located in the casing 16 and has an L-shaped passage 19 therethrough. Such passage 19 as shown in Figure 1 enables the gasoline to be sucked through the pipe 15, through passage 19, pipe 17 and into the pump 13 and to be discharged therefrom through a pipe 20 into the bowl 11. Gasoline or fuel normally cannot escape from the bowl 11 because a cut-off valve 21 is provided in its discharge or outlet pipe 22. To such pipe 22 a flexible hose 23 extends equipped with a nozzle 24, to be used in filling the fuel tank of an automobile or filling giliother receptacle, upon opening the valve A pipe 25 preferably provided in sections coupled together as at 26, communicates with the discharge pipe 22 and with the casing 16. Rotation of the valve 18 will arrange the passage 19 in communication therewith and in communication with the pipe 17 thus cutting off communication with the pipe 15. With the parts thus adjusted, which is shown in Figure 2', a suction will be created through the pipe 22 which is useful in withdrawing gasoline or fuel from the tank of an automobile or the equivalent, upon reciprocation of the pump by operating its handle 14. Such suction draws the gasoline or fuel through the nozzle 24:, hose 23, (valve 21 being closed) pipe 25, passage 19, pipe 17, pump 13 and pipe 20 into the bowl 11.

Attention is called to the fact that my improvements are not necessarily limited to use in connection with a gasoline filling device or pump but are capable of broad application in connection with filling devices and pumps generally.

I claim as my invention In combination with a liquid dispensing apparatus, including a measuring receptacle, a dispensing pipe communicating therewith and including a flexible hose for conveying liquid from the receptacle to a tank to be filled, a single acting pump, a supply pipe communicating with said pump, a delivery pipe connecting said pump and receptacle, a suction pipe communicating with the dispensing pipe, a valve casing connecting the pump intake, the supply pipe and the suction pipe, and a one way valve in said casing and adapted to selectively connect the pump with the supply pipe or with the suction pipe for delivery to said measuring receptacle whereby said receptacle may be filled from an original source of supply or the material returned from the tank originally supplied 5 therewith and measured in said receptacle.

In testimony whereof I allix my signature.

DANIEL G. J ESTER. 

